Hand brake



4 H. Ev ANDERSON HAND BRAKE Filed Aug. 31, 1922 fig! Innen/far HarleyE rzderwz ZM M Z .fw E

Patented .duly 1924-; i. .1

HARLEY n. Annan-somos (unicaen, rnnmors, assrenoa, BY iunsivn ASSIGNMENTS, 'ro w. n, Minna, rnc., n ooiaronarron or? DELAWARE.

HAND BRAKE.

Application inea August ei, ieee. semaine. 585,479.

To-aZZ @Li/tom t may concern f d Be itknown that I, HARLEY E. ANDERSON,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain lnew and l useful Improvement in Hand Brakes, of which the following is a full, clear, concise,

and exact description, reference being had tothe accompanying drawings, forming a io part of this specification.

This invention relates to improvements in hand bra-kes.

One object of the invention is to provide a simple andeflcient hand brake of the vertii5 cal stada type for railway cars wherein the Vbrake is operated by a hand wheel, and

means is provided `for quickly releasing the brake upon reverse movement of the hand wheel for automatically disconnecting the chain pulling member from the brake staff upon turning the hand wheel in a direction l' vto slacken the brake cha-in.

It is a further object of the invention to provide an automatic means to re-engage the chain pulling member with the brake sta when the brake has reached its fully released position.

Cther'objects of the invention will more fully appear from the description hereinafter following. 'l

In the drawings formingA a part of this specification, Figure 1 is a vertical sectional view 'through a hand brake showing my improvements embodied therein and also showing in section the end portion of a car with the brake'applied thereto. Fig. 2 is a hori- -zontal sectional view on the line 2 2 of F ig. 1.v And Fig. 3 is a side elevational view of the traveling block, loolring from the left of Fig. l.

In said drawing, denotes the end sill yof railway car, 11 the end post and 12 the end wall or outer sheathing.

My improved hraire, as showmccmprises, ai; a housing A; a brak-e staff E; a worm C; a

traveling block D; and a brake chain E.

' As sho-wn, the housing comprises verti cally extending front wall 13, side walls let- 14 and a broken rear wall comprising 50 the upwardly and downwardly extending portions 15 and 16. Projecting horizontally in a rearward direction from the wall 15, is

a lug 17 for securing the housing to the end sill 10. The lug 17 is perforated at 18 to re- 55I ceive a lag screw 19 for'supporting the housing. The wall 16 is providedwith Voppor sitely extending lugs 20 and 21, suitably perforated to receive the lag screws 22, by means of which the upper end of the housing islsecured to the end wall'12 and the post 1l. VThe bottom 23 of Ytlfiehousing is perforated at 24 to receive the brake' chain E and is vprovided with 4 downwardly eX-.

tending spaced bearing lugs 25to support the grooved idler pulley 26, the lugs being perforated to receive the transverse shaft 2'? upon which the pulley 26 is journaled.Av The bottom 23 of the housingV A is also perforated at 28 to receive the lower end rof thev brake staff B and forml a journal therefor. Around the perforation 23, the bottom 23 is provided with an npwardlyvextending cir.- cular fiange 29 which vforms an abutment for the lower end of theworm C. AThe upper wall 30 of the casing A is perforated at 1 31 to form a bearing opening'to receivethe upper end of the worm C. The openingV 31 of the upper wall 30 is surrounded by a vertically extending circular flange 32.

'Ihe brake stati' B has the portion thereof within the worm formed square, as shown in Fig. 2, and is provided with a cylindrical lower endportion 33 journaled in the open- 28, and an upper cylindrical portion^ 311-. The hand wheel 35 is secured to the upper end of the brake stad .iB by the upper end of the bra-ke staffA being formed square and the hand wheel 35 ihaving a' correspondinglysquare recess*l fitting thereon, or secured in any other well'known manner.

The worm C is of cylindrical` form and has its exterior cylindrical surface provided with heavy threads 36. The upper end of the worm C is provided with a smooth cylindrical portion 37 journaled within the recess 31.A The cylindrical portion 37' is provided with a laterally extending lcircular flange 38 having a down-turned outer edge portion 39, thereby providing a'circular recess 10 adapted to receive the flange 32 projecting from the upper wall of the housing A.. rIhe worm C is also provided with a longitudinally extending bore fof square cross section las indicated at 41 in Fig. 2,;to snugly kreceive the squared portion of ythe brake stad B so that the worm will be rotated therewith. The lower end 42 ofthe worm rests upon the upper face of the flangeV 29 and the circular flange 38 at the upper.'

end of theworm is supported upon the upwardly projecting fla-nge 32 on the upper wall 30` of the housing A. The lower end of the brake staff B is adapted to receive a cotter-pin 43 whereby. the brake staff and worm are held in assembled relation` with the housing A.

The chain carrying block D, as best shown in Figs. l and 3, is provided with part threads 44 on one of its faces, adaptedVv to co act with the threads 36 of the kworin C. The wall of the chain carrying block D opposite to the threaded .portion is provided with two recesses 45 and 46 adapted to receive cam members 47 and 48. As shown, the lrecess 45 is open at its top and side so as to allow a rocking movement of the cam 47, and the recess 46 is of a sufficient height to allow the outer end of the cam 48 to pass within, the same when the cam is rocked upwardly relatively to the block. Thevcams 47 yand .48 are pivotally supported within the recesses45 and 46 by the pivot pins 49 andy 50. The lower end of the chain carrying block D is yprovided with downwardly projecting spaced lugs 5l providing means forattaching the chain to the block, the last link; of the f chain being secured to the lugs 511, by'transversely extending pin 52 passing through said link.v -v

Thecams 47 and 48, as shown, have their pivotal openings eccentrically located so as to dispose their centers of weight eccerr tric to the pivot pinsfto allow them to bU returned to their lowerinost position by the force of gravity..l Thecams 47 and 48 are provided .with vcurved cam faces 53 and adapted to, co-act with the inner face of the frontv wall 13 of the housing A and the distance between the pivot pins 49 and 50 and .the high points of the. cam faces 53 andr54 is such that when the high points of the cam faces 53 and 54 arel in engagement with the inner faceY 55 of the front wall 13 of the. housing A, the threads A44 on the block D will be held in engagement with the threads 36 of the worm C. l't will thus be clear that the threads will be held in engagement at all times when the cams 47 and 48 are in their lowermost positions with the high points engaging 'thc inner face of the front wall of the casing,

The 'lower end of the housing A, is provided with interior downwardly extendingy inclined ribs 56 located at opposite'sides of the samev and spaced apart as shown in Fig. 2, to provide a spacevwithin which is looselyvreceived'the lower cam 48 when the -block is in its lowermost position. The

lower portion of the block D is provided with inclined faces 57 which co-act with the inclined ribs 56 to move the block D inwardly toward the staff when the block reaches its lowerinost position in the casing.

In the operation of my improved hand brake, the hand wheel 35 is turned in a clockwise direction, looking down vertical,- ly in Fig. l, to tighten the brakes. In rotating the hand wheelA 35 in a clockwise direction, the worm C will be rotated therewith in the same direction and the block D will be moved in an upward direction by the threads 36 co-acting with the threads 44 on the block. During this upward movement of the block, the cams 47 and 48 will -be held in their lowermost positionias shown in Figfl in full lines, due to the force of gravity andV due to the frictionlal Contact with the inner wall 55 of the housing A, thereby holding the threads on the block yD constantly in engagement with the threads 37 on the worm. The rotation of the brake staff and worm C is.y vcontinued until the block D has been moved Vupwardly a suflicient distance to properly tighten the brake through the action ofthe chain'E. The position of the block when the brake has been tightly set will generally. benear the upper end of the casino' A and lthe approximate position of the same is shown in dotted lines in Fig. l.. It is, of course, obvious that the block need not be raised to the height shown by the dotted lines in Fig. l to tighten ythe brake properly, but may reach some intermediate position, dependentupon the amount of slack originally in the brake chain.

ln releasing the brake, hand wheels35 is turned in the opposite direction to that previously described, thus rotatingk the worin C in the opposite direction also, thereby causing inter-engaging threads 36 and 44 to move the block D downwardly. As the block D is moved downwardly in the casing A, the cams 47 and 48v being in frictional contact with the side walll3 of the housing' A will be rocked upwardly relatively to the block and the 'cani faces 53-54 moved inwardly toward the block, thus allowing the block to be pulled outwardly toward thefwall 13 of the casing A under the tension of the chain and -permitting disengagement of the threads 36 and 44. It .will thus be seen that the block is free to swing outwardly and entirely clear the threads 36 of the worm C so as to completely release the block and `allow the same. to drop to the bottom ofthe casing A, where the faces 57' on vthe block will engage with the inclined ribs v56 on the front wall of the casing and then automatically guide the block inwardly and reengage the threads 44 lwith the threads 36 of' the worm C." As the block D is moved laterally toward the brake staff by the camming action of the inclines 56 and 57, the cams 47 and 48 will be allowed to rock.

by the force of gravity, on'their pivots 49v when the block and other parts are again' in position so that the same may be operated to properly tighten the brakes.

I have herein shown and described what I now consider the preferred manner of carrying out my invention, but the same is merely illustrative and I contemplate all changes and modifications that come within the scope of the claims appended hereto.

I claim:

l. In a hand brake for railway cars; the

Y combination with a shaft; of a brake chain;

mechanism connecting the shaft and chain to cause the chain to be tightened during the rotation of said shaft in one direction; and automatic means for causing said mechanism i to be disconnected upon rotation of said shaft in the reverse direction.

2. In a hand brake for railway cars; the combination with a brake stad; of a' brake chain; mechanism connecting the staff and chain to cause the chain to be tightened during kthe rotation of said statfin one direction; automatic means for causing said mechanism to kbe disconnected upon rotation of said stad ink the lreverse direction; and automatic means for` causing said mechanism to be again connected upon release of the brake.

3., Ina handbrake for railway cars; the combination with a brake staff said statt` being rotatable in one direction to tighten the brakes; of a brake chain tightening means; and means arranged to be set in operation by rotation of said staii' in a reverse direction, for disconnecting said tighteningY means to cause a release of the brakes.

4. In a hand brake for railway cars; the combination with a brake staff of a brakechain tightening means; means arranged to be set inoperation bysaid staff, tor discon- .necting said tightening means to cause a release of the brakes; and automatic means to travel in a direction to slacken the chain.

6. In a hand brake for railway cars; the combination with a traveling member having a brake chain connected thereto; of means for causing said member to travel in a direction to tighten the brake chain and also in a direction to slacken the same; mechanism controlled by said means for causing said member to be disconnected from said first named means upon operation of said first named means to cause said member to travel in a direction to slacken the chain; and means for re-eiigagiiig said rst named means and said member.

7. In a hand brake for railway cars; the combination with a traveling member having a brake chain connected thereto; ot means for causing said member to travel, to tighten and slacken the chain; and devices controlled by the travel of said member for causing the same to be disconnected from said iirst named means.

8. In a hand brake Jfor railway cars; the

ycombination with a traveling member having a brake chain connected thereto; of means for causing said member to travel in one direction; to tighten and in the oppositey direction to slacken the chain; devices controlled by the operation of said means in etfecting movement of said member in the direction last named tor causing said member to be disconnected from said means; and means for re-engaging said member and said first named means.

9. In a hand brake for railway cars; the combination with a brake staff oit a traveling member having a brake chain connected thereto; cooperating means on said sta-d and member Jor causing said member to travel upon operation of said stad; and devices controlled by the movement of said member, for causing said means to be disconnected.

l0. In a hand brake Jfor railway cars; the combination with a brake staii; of a traveling member having a brake chain connected thereto; cooperating means on said stai and member for causing said member to travelV upon operation ot said staii; devices controlled by the movementof said member for causing said means to be disconnected; and automatic means toreagain connecting said IIIQIIIS.

11. In a hand brake tor railwav cars, .theV combination with a rotary brake staii; of a traveling member having a brake chain con-v nected thereto; co-operating means on said' statiE and said member for causing` said member to travel in a chain tightening directionV when said staiin is rotated in one directionV and for causing said member to travel in a reverse vdirection upon rotation of said stati in the opposite direction; and means operated by the movement of said member in said reverse direction to cause the first named means to be disconnected.

12. In a hand brake for railway cars, the combination with a rotary brake statt);y ot a traveling member having a brake chain connected thereto; (o-operating means on said staff and said member for causing said member to travel in a chain tightening direction when said staff is rotated iii one direction and for causing said member to travel in a reverse direction upon rotation of said staff in the opposite direction;l

having a brake chain connected thereto,

said member having a sectional threaded portion co-acting With said Worm to cause the member to travel upon rotation oi said stad, said member also being adapted for Vmovement laterally to disengage the threaded portion and Worm; and means for normally holding said memberrin engagement` with said Worm, said means being operated upon rotation of said stati' in a direction to y release the brakes to allow lateral movement of said member to disengage the threaded portion and the Worm.

14. In a hand brake for railivayears; the combination with a rotary brake staff hav- I ing a Worm thereon; of a traveling, member having a brake chain connected thereto said member having a sectional threaded portion co-acting With said worm to cause the member to'travel upon rotation of said stati'7 said member also being adapted for move-.

ment laterally to disengage the threaded ortion and Worm; means for normally iolding said member in engagement With said Worm, said means being` operated -upon rotation of said staff in a direction to release the brakes to allovv lateral movement of said member to` disengage the threaded portion and the Worin; and means for caus-v ing the member to ,move laterally to reengage the threaded portioiivvith the Worin.

y 15. In a hand brake for railivay cars; the combination With a rotary brake staff having a Worm thereon; of a traveling member having a brake chain connected thereto,

i said member having a seotionally threaded portion evo-acting with said vvormV to cause the member to travel upon rotation of said stati', said member also ybeing adaptedV for movement laterally to disengage the threaded portion and Worm; and gravity actuated means for iiermally'liolding saidmeinber in engagement with said Worm, said means being operated iiponiotation oii'said staff in a ldirection t'o release thel brakes yto allow lateral -inovement of said member to disengage vthe threaded portion and the vvorm. 16. In afhand brake,.v the combination with a rotary brake sta'ii'l having a Worin thereon; of a housingeiielosiiig said ivorm and. having atront Wall provided Wit-h a clam Von its inner face; a traveling member Within said housing, said member having a brake chain attachedthereto and provided With asectional threaded portion co-acting with said Worm to cause said member `to travel When the stall' is rotated; a cam portion adapted rto co-act with said first named cam to'cause;,saidgthreaded portion land Worm'to engage; ravit'y operated pivoted cams mounted on said member and engaging saidjvall to normallyT hold the ,member spaced from' the Wall `and in engagement ivithsaid Worm, said gravity operatedeams being adapted to be rocked by frictional Contact iv'ith said -Walliipon movement, oi saidmember in a directionto release the brakes, `to thereby allow saidv member to move la-terallytoivardthe/,Wall and aivay frointhe ivori'nhto :cause.disengagement or saidivorm andthreaded portion.

- v17g In a hand brake, thecombination with `a rotary brake stati' yhaving a Worm thereon of a housing enclosing said `worm andprov'id'ed ivith a cam; a traveling inembeimW-ithin said housing, saidjmemberhaving4 a brake chain` attached thereto` and -provided withA a vsectional.threaded portion coactingvvith saidjvorm fto'cause said member tontravelA when the :staff is rotated.; a cam portionfadaptedtouoo-actwvvith said rst named y`cainto cause said threaded portionV and `worm to@ engage; gravity operated pivotedjcams mounted on said-member to normally hold jolies-ame in engagement with said ,ivorm, Ysaid,gravity operated cams being adaptedtobe roekedby frictional con-A tact with said.,;housingiipon vmovement of said member vin a, kdirection to yrelease the bral/:esjto thereby allow said: member 'to move;A laterally `:to -:causediseiigageiiient of saidvvormandthreaded portion. .Y In' Witnessy that I `c'laimdthe foregoing I have hereunto subscribed my `name this 14th day'ofAugust 1922. y i y `v`"HARLEY E. ANDERSON. Witnesses: o A

`. NAC. Q13 ser,

VAiviv BAKER. 

